I reassembled my engine/transmission/carb/adjusted the timing last night and ran into some trouble trying to start it. First I should let it be known that I always had a problem with the carburetor occasionally couching out the air filter (K&N cone previous to winter engine work) when starting the bike up. I am having two problems now… first is a very violent kickback of the kick start leaver. It kicked back on me 3-4 times out of the 10-12 or so attempts to kick it over. They were very hard kickbacks, one hard enough make me sit down while my ankle recovered. I did get the bike started twice and it seemed to be pretty good, just idling a bit fast.
The other problem I am having is sever coughing/spit back from my carburetor. This happens on the occasions when the bike does not kick back, maybe 3 times out of the 10-12 attempts to kick it over. This is not a little spit either. I now have the velocity stack fitted and it spits back so hard that it turned the wire/mesh screen of the velostack inside out.
My question is, is it likely that both of these problems can be attributed to timing that is too advanced? I used the TDC tool out host provides and a test light to set the timing right before TDC on the compression stroke. By all means I am not a seasoned mechanic. I have some experience with autos, but the RE is my first bike… I am learning as I go.
I have a 1999 bullet 500. Running a free flowing exhaust with no baffle, pilot jet is 30, main jet is 125, velocity stack as an airfilter. Valve timing is good, no up and down movement but I am able to spin the pushrods.